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You may view the entire map on the screen, or you may zoom-in to one of nine overlapping sections using the zoom boxes. The zoom boxes are nine grey squares under the word zoom. To view an enlarged section of the map, simply click on the appropriate zoom box. As you move the mouse, a verbal description of the area to be displayed is shown in blue to the right.
Each map section has its own set of zoom boxes. To move from one map section to another, click on the appropriate zoom box for the area you wish to view. To revert to the full map at any time, click on the grey square labelled full map.